<add verb="GET,POST,HEAD,(GETSOURCE),(HEADSOURCE),(POSTSOURCE)" path="*.doc,*.docx,*.ppt,*.pptx,*.xls,*.xlsx,*.pdf,*.txt" type="Sinopec.Moss.CustomUploadPage.MyDownload, Sinopec.Moss.CustomUploadPage, Version=1.0.0.0, Culture=neutral, PublicKeyToken=1e537c5b8c721ccf" />
主要介绍一下(GETSOURCE)参数，
当sharepoint网站打开文档时调用本地office进行打开，当选择本地office选择领存为会调用(GETSOURCE)方法
jindahao